that number, by the way, comes directly from the obama administration. >> senator kerrey. we are not going to do cap-and-trade, but that is not the issue before us today. senator fischer says human beings are not warming the planet, and i say we are. i think it is a clear and compelling problem and we need to address it, and we need a debate on how to address it and what our strategy is going to be. otherwise, we are going to wonder why in god's name we did not do anything about it. >> next question directed to senator kerrey. >> there is a lot of discussion about lowering taxes by eliminating deductions and loopholes, but one person's local is another person's deduction for mortgage interests, charitable contributions, or state and local taxes. would you favor eliminating or reducing any of those, or would you offer other specific changes? >> the big four are mortgage deduction -- you can scale it back. likewise with the charitable deductions, state and local. i think there is a great payoff for simplification. you have got to believe in it. you have got to believe that s